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Wednesday, May 6, 2026

DayQuil class action claims non-drowsy formula falsely advertised - Top Class Actions

  • Who: Bertha Meza filed a class action lawsuit against The Procter & Gamble Co.
  • Why: Meza claims Procter & Gamble falsely markets its DayQuil over-the-counter cough, cold and flu medicine as non-drowsy because it contains dextromethorphan hydrobromide.
  • Where: The class action lawsuit was filed in California federal court.

Procter & Gamble falsely markets that its “Non-Drowsy” DayQuil over-the-counter cough, cold and flu medicine products won’t cause drowsiness, a new class action lawsuit alleges.

Plaintiff Bertha Meza claims the “Non-Drowsy” DayQuil products contain the active ingredient dextromethorphan hydrobromide (DXM), which she argues is “an ingredient that causes drowsiness.”

Meza argues Procter & Gamble misled reasonable consumers and overcharged them for the “non-drowsy” DayQuil products due to them containing DXM.

“The truth is that products containing DXM — including the NonDrowsy DayQuil Products — do cause drowsiness, and that drowsiness is a common side effect of DXM (a fact not known by the average consumer),” the DayQuil class action states.

Meza wants to represent a nationwide class and California subclass of consumers who have purchased a “non-drowsy” DayQuil product.

Procter & Gamble violated FDA rules by mislabeling DayQuil products as non-drowsy, says class action

Procter & Gamble labeling the DayQuil products as “non-drowsy” is in violation of the U.S. Food and Drug Administration rule prohibiting companies from...



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